Mechanical movement.



No, 773,900. PATENTED NOV. 1, 1904. 0. SODER.

MECHANICAL MOVEMENT.

APPLICATION FILED JAN. 4. 1904.

NO MODEL. 2SHEETB-SHEET 1.

@MMWM/u Q No. 773,900. PATENTED NOV. 1, 1904u 0. SODER.

MECHANICAL MOVEMENT.

APPLICATION 17mm) JAN. 4. 1904.

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@OH 1 a z; 9 [mm] 75 Uiviran STATES Patented November 1, 1904.

ATENT FFIQE.

OSCAR SODER, OF NIEDERLENZ, SWITZERLAND, ASSIGNOR TO THE FIRM OF J.SODER & SOHNE, OF NIEDERLENZ, SWVITZERLAND.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 773,900, dated.November 1, 1904.

Application filed January 4, 1904. Serial No. 187,688. (N0,model.)

T all whom it may concern:

Be it known that I, OSCAR SoDnR, a citizen of the Republic ofSwitzerland, residing at Niederlenz, Switzerland, have invented a newand useful Mechanical Movement, of which the following is aspecification.

My invention has relation to a mechanical movement particularly designedto convert rotary motion into rectilinear motion, and

I0 specifically to convert rotary motion into reciprocating motion; andit has for its object the provision of means for balancing the shocksresulting from the thrust and pull on the device to which rectilinearmotion is imparted I 5 through its connections with the rotatingelement, whereby not only a substantially noiseless but a uniform motionis imparted to the actuated device and those shocks which actinjuriously not only on the actuated device but on the actuatingmechanism are avoided;

but that my invention may be fully understood I will describe the samein detail, reference being had to the accompanyingdrawings, in which, asan example, I have shown my 2 5 invention as applied to a screening orsifting machine for the purpose of imparting rectilinear reciprocatingmotion thereto.

In said drawings, Figure 1 is a side elevation, partly in. section; andFig. 2, a top plan view. Fig. 3 is a side elevation, partly in section,of the mechanical movement; and Fig. 4 is a fragmentary top plan viewshowing the actuating mechanism in a position different from that shownin Fig. 2.

On the vertical crank-shaft 12, which is mounted in a standard 11,erected on the bedplate 10, are fixed a belt-pulley 13 and a flywheel 5.On the upper side of this fly-wheel 5 is fixed an inset piece 6, Fig.1,'which is pro- 4 vided with a projecting part ,7 arrangedeccentrically to the axis of the shaft and formed with a bushed hole. Inthis hole is loosely inserted a crankpin 9,which is fixed to a plate 4by means of a dome 8. To the plate 4 are rigidly connected the similarends of two springs 1 1, of elongated form, their other ends beingconnected rigidly by means of intermediate pieces 2 to the sifter 3,which is adapted to be moved to and fro rectilinearly.

The fly-wheel 5 is provided with a weight 14, 5 arranged diametricallyopposite to the crankpin and intended to balance the stresses whichoccur at each end of the stroke of the reciprocating sifter at themoment of the reversal of the direction of movement of the same. Above 55 the plate 4 are arranged two springs 15, each composed of several barsor strips arranged side by side on their longitudinal edges at rightangles to the springs 1. The springs 15 are connected at one end to lugs16 of the plate 4, and at their other end to lugs 17 of a weight 18,which is capable of moving rectilinearly transversely to thelongitudinal direction of the springs 1. The weight 18 is of elongatedprismatic shape and is provided on 5 its ends with shoes 19, Fig. 3, bymeans of which the weight bears on uprights 20, whose feet rest in ways21, provided on the bedplate 10.

The crank-driving mechanism operates in 7 the following manner: By therotation of the crank-shaft 12 the sifter 3 is moved rectilinearly toand fro by means of the crank-pin 9 through the medium of the springs 1,while through the medium of the springs 15 the weight 18 is movedrectilinearly to and fro in a direction at right angles to the directionof movement of the sifter, and the weight 14 is caused to rotate aroundthe axis of the shaft.

This weight 14 by reason of its position rela- 8O tively to thecrank-pin 9 will be in its extreme left-hand position when the sifter 3is in its extreme right-hand position, and, vice versa, it will be inits extreme right-hand position when the sifter is in its extremeleft-hand po- 8 5 sition. Consequently the stresses which occur at eachend of the stroke of the sifter are balanced. The weight 18, which canmove rectilinearly to and fro, reaches its extreme end positions whenthe weight 14 is in posi- 9 tions situated ninety degrees from itsextreme right hand and lefthand positions. The weights 14 and 18 thenact oppositely to each other, so that shocksor stresses which occur inthe direction of the movement of the weight 18 will also be balanced. Bythe rotation of the crank-shaft the springs 1 and the springs 15 arebent alternately out of their middle po- Lani sitions (in which they areof straight form) in a lateral direction, Figs. 2 and t, the one set ofsprings being always moved out of their middle positions to the sameextent that the other set of springs are moved nearer to their middlepositions. The employment of the springs 1 and 15 is intended to insurea gentle and steady motion during the entire duration of the rotation ofthe crank-shaft.

The weight 18 may be divided up into a number of smaller weights.

Having now particularly described and ascertained the nature of the saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- 1. Means to produce reciprocating motion, comprising arevoluble crank a connection between the latter and the element to bereciprocated and a weight to balance the thrusts of the crank; incombination with a second weight to balance the thrusts of thefirstnamed weight, said second weight reciprocatcd by the crank in adirection practically at right angles to the direction of motion of thereciprocated element.

2. Means to produce reciprocating motion, comprising a revoluble crank,a connection between the latter and the element to be re ciprocated anda weight to balance the thrusts of the crank; in combination with asecond weight to balance the thrusts of the firstnamed weight, saidsecond weight reciprocated by the crank in a direction practically atright angles to the direction of motion of the reciprocated element anda resilient or flexible connection between the second weight and crank.

The combination with an element to be reciprocated, a revoluble crank, aflexible connection between the crank and said element and a weight tobalance the thrust of the crank; of a second weight, a flexibleconnection between it and the crank, said second weight reciprocated bythe crank in a direction practically at right angles to the direction ofmotion of the reciprocated element.

4:- Two pairs of bar-like springs, a revoluble crank to which one end ofeach of said pairs of springs is secured in planes practically at rightangles to each other, the springs of each pair on opposite sides of theaxis of rotation of the crank, a rocking weight connected to the freeend of one pair of said springs and a second weight to balance thethrusts of the crank, for the purpose set forth.

5. The combination with the element to be reciprocated, of a crank toreciprocate the element, a rotating weight moving diametrically oppositeto the crank, and a weight reciprocated by the crank at right angles tothe direction of motion of the element, substantially as set forth.

6. The combination with the element to be reciprocated, of a crank, aplate moved by the crank, fiat springs connecting the element to theplate, a Weight moving diametrically opposite to the crank, a secondweight rocked at right angles to the element and flat springs to connectthe weight and plate, substantially as set forth.

7. The combination with the element to be reciprocated, of a crank andcrank-shaft, a fly-wheel on the shaft eccentricallyweighted, a platemoved by the crank, leaf-springs connecting the element to the plate, aweight moved at right angles to the direction of motion of the elementand leaf-springs connecting the weight and plate, substantially as setforth.

8. The combination With the element to be reciprocated, of a crank andcrankshaft, a revolving weight to neutralize the thrusts at each end ofthe movement of the element and a second weight to neutralize the thruston the connected parts when the first weight is rotating between itseffective positions of neu tralization on the element, substantially asset forth.

In testimony whereof I have signed my name to this specification in-thepresence of two subscribing witnesses.

OSCAR SODER.

Witnesses:

E. BLUM, A. LIEBERKNEOHT.

